CN210677465U - Protective cover for plasma welding protective gas - Google Patents
Protective cover for plasma welding protective gas Download PDFInfo
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- CN210677465U CN210677465U CN201921691908.6U CN201921691908U CN210677465U CN 210677465 U CN210677465 U CN 210677465U CN 201921691908 U CN201921691908 U CN 201921691908U CN 210677465 U CN210677465 U CN 210677465U
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- air inlet
- inlet pipe
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- inner cavity
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Abstract
A shield of plasma welding shielding gas. Relates to a welding technology of a stainless steel pressure vessel, in particular to a protective cover for plasma welding protective gas. The protective cover for the plasma welding protective gas has the advantages of compact and reasonable structure, simplicity and convenience in use and capability of enabling the protective gas to be uniform and effectively protecting a welding seam welding area. Comprises a seat body, an air inlet pipe, a stainless steel wire mesh and a red copper plate; the air inlet pipe is fixedly arranged in an inner cavity of the seat body with an open top and is close to the bottom of the inner cavity; the air inlet pipe is horizontally arranged, one end of the air inlet pipe extends out of the air inlet pipe and is positioned at the outer side of the seat body; the air inlet pipe is provided with a plurality of uniformly distributed air outlet holes. The utility model has the characteristics of compact structure is reasonable, uses portably, makes the even butt weld welding area of protective gas effectively protect etc.
Description
Technical Field
The utility model relates to a stainless steel pressure vessel welding technique especially relates to plasma welding protective gas's safety cover.
Background
Plasma Arc Welding (PAW) is a Welding method using Plasma Arc as a heat source. The gas is heated by electric arc to be dissociated, and is compressed when passing through the water-cooling nozzle at high speed, so that the energy density and the dissociation degree are increased, and plasma arc is formed. Its stability, heat productivity and temp. are higher than those of general electric arc, so that it has higher penetration force and welding speed. Argon is generally used as the plasma arc forming gas and the shielding gas surrounding it. Depending on the material properties of various workpieces, helium, nitrogen, argon, or a mixed gas in which two gases are mixed is also used.
In the prior art, when plasma welding is performed, the surrounding protective gas is usually sprayed by manually adjusting the position of the protective gas, and the spraying amount and the position accuracy cannot be controlled, so that the welding quality is directly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to above problem, provide a compact structure is reasonable, use simple and convenient, make the even plasma welding protective gas's that carries out effective protection to the weld welding zone of protective gas safety cover.
The technical scheme of the utility model is that: comprises a seat body, an air inlet pipe, a stainless steel wire mesh and a red copper plate;
the air inlet pipe is fixedly arranged in an inner cavity of the seat body with an open top and is close to the bottom of the inner cavity;
the air inlet pipe is horizontally arranged, one end of the air inlet pipe extends out of the air inlet pipe and is positioned at the outer side of the seat body;
the air inlet pipe is provided with a plurality of uniformly distributed air outlet holes;
the stainless steel wire mesh is matched with the inner cavity of the seat body and is fixedly arranged at the top of the air inlet pipe;
the red copper plate is in a plate shape, is horizontally and fixedly arranged in the inner cavity of the seat body and is positioned above the stainless steel wire mesh;
the red copper plate is provided with a plurality of air holes which are uniformly distributed and arranged.
The air outlet is positioned at the bottom of the air inlet pipe;
a gap is reserved between the air inlet pipe and the bottom of the inner cavity of the seat body.
The two air inlet pipes are symmetrically and fixedly arranged in the inner cavity of the seat body.
The base body comprises a bottom plate, a pair of end plates and a pair of side plates;
the pair of end plates are vertically and symmetrically fixedly arranged at the top of the bottom plate;
the pair of side plates are vertically and symmetrically fixedly arranged at the top of the bottom plate and connected with the pair of end plates to form an inner cavity of the seat body;
and one end plate is provided with an insertion hole matched with the air inlet pipe.
The top of the pair of end plates and the top of the pair of side plates are in the same plane.
The utility model comprises a seat body, an air inlet pipe, a stainless steel wire net and a red copper plate; in the scheme, the protective gas adopts nitrogen, the nitrogen enters the air inlet pipe and flows out of the air outlet holes of the air inlet pipe, the air outlet holes are uniformly distributed on the air inlet pipe, the nitrogen is uniformly distributed and conveyed to the inner cavity of the seat body, and the nitrogen flows out of the air vent holes of the red copper plate through the gaps of the stainless steel wire meshes, so that the flowing balance of the protective gas is improved; before plasma welding is carried out on the pressure vessel, the device stretches into the back of a welding part, nitrogen is introduced, gas protection is fully carried out on the welding part, output is stable and balanced, and welding quality is ensured. The scheme has the characteristics of compact and reasonable structure, simple and convenient use, effective protection of the welding seam welding area by the protective gas and the like.
Drawings
Figure 1 is a schematic structural view of the present invention,
figure 2 is a schematic top view of the structure of figure 1,
figure 3 is an enlarged schematic view of the intake pipe of figure 1,
FIG. 4 is a schematic view of the construction of the copper plate of FIG. 2;
in the figure, 1 is a seat body, 11 is a bottom plate, 12 is an end plate, 13 is a side plate, 2 is an air inlet pipe, 3 is a stainless steel wire mesh, 4 is a copper plate, 41 is an air hole, and 5 is a partition plate.
Detailed Description
The utility model is shown in figures 1-4 and comprises a seat body 1, an air inlet pipe 2, a stainless steel wire net 3 and a red copper plate 4;
the air inlet pipe 2 is fixedly arranged in an inner cavity of the seat body 1 with an open top and is close to the bottom of the inner cavity;
the air inlet pipe 2 is horizontally arranged, one end of the air inlet pipe 2 extends out of the air inlet pipe 2 and is positioned at the outer side of the seat body 1; the end part of the air inlet pipe 2 positioned at the outer side of the seat body 1 is provided with a fixedly connected air inlet pipe 2 joint, and the air inlet pipe 2 joint is communicated with a gas source of protective gas through a hose; the other end of the air inlet pipe 2 is positioned in the seat body 1, and the end part is sealed;
a plurality of uniformly distributed air outlet holes are formed in the air inlet pipe 2;
the stainless steel wire mesh 3 is matched with the inner cavity of the seat body 1 and is fixedly arranged at the top of the air inlet pipe 2;
the red copper plate 4 is in a plate shape, is horizontally and fixedly arranged in the inner cavity of the seat body 1 and is positioned above the stainless steel wire mesh 3;
the red copper plate 4 is provided with a plurality of air holes 41 which are uniformly distributed and arranged.
The red copper plate 4 can isolate the high temperature of plasma welding electric arc, and effectively prevents the stainless steel wire net 3 from being heated and melted by the plasma electric arc (because the stainless steel wire net 3 is too thin, the electric arc is directly melted when meeting the high temperature of the plasma, and the function of the gas screen is lost).
The air outlet is positioned at the bottom of the air inlet pipe 2; the gas that gets into the pedestal 1 spouts from the bottom position, and the distribution that can be more even is in the bottom of pedestal 1, upwards passes through stainless steel net 3 (air sieve). The gas is converted from a turbulent state to a laminar state, and the welding metal and the heat affected zone are better protected.
And a gap is reserved between the air inlet pipe 2 and the bottom of the inner cavity of the seat body 1.
Be equipped with a plurality of baffles 5 between the bottom of the inner chamber of pedestal 1 and intake pipe 2, baffle 5 is vertical fixed to be set up in pedestal 1, and intake pipe 2 supports through a plurality of baffles 5, prevents that 2 middle part positions of intake pipe from appearing warping, influences life.
The two air inlet pipes 2 are symmetrically and fixedly arranged in the inner cavity of the seat body 1.
The seat body 1 comprises a bottom plate 11, a pair of end plates 12 and a pair of side plates 13;
the pair of end plates 12 are vertically and symmetrically fixedly arranged on the top of the bottom plate 11;
the pair of side plates 13 are vertically and symmetrically fixedly arranged at the top of the bottom plate 11 and connected with the pair of end plates 12 to form an inner cavity of the seat body 1;
one of the end plates 12 is provided with an insertion hole adapted to the intake pipe 2.
The tops of the pair of end plates 12 and the tops of the pair of side plates 13 are in the same plane.
The disclosure of the present application also includes the following points:
(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;
(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;
the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.
Claims (5)
1. The protective cover for plasma welding protective gas is characterized by comprising a base body, an air inlet pipe, a stainless steel wire mesh and a red copper plate;
the air inlet pipe is fixedly arranged in an inner cavity of the seat body with an open top and is close to the bottom of the inner cavity;
the air inlet pipe is horizontally arranged, one end of the air inlet pipe extends out of the air inlet pipe and is positioned at the outer side of the seat body;
the air inlet pipe is provided with a plurality of uniformly distributed air outlet holes;
the stainless steel wire mesh is matched with the inner cavity of the seat body and is fixedly arranged at the top of the air inlet pipe;
the red copper plate is in a plate shape, is horizontally and fixedly arranged in the inner cavity of the seat body and is positioned above the stainless steel wire mesh;
the red copper plate is provided with a plurality of air holes which are uniformly distributed and arranged.
2. The shield gas shield of claim 1 wherein said gas outlet is located at a bottom position of said gas inlet tube;
a gap is reserved between the air inlet pipe and the bottom of the inner cavity of the seat body.
3. The shield gas shield of claim 1 wherein said inlet tube is two and symmetrically and fixedly disposed within the interior cavity of said body.
4. The shield gas shield of claim 1 wherein said seat comprises a bottom plate, a pair of end plates, and a pair of side plates;
the pair of end plates are vertically and symmetrically fixedly arranged at the top of the bottom plate;
the pair of side plates are vertically and symmetrically fixedly arranged at the top of the bottom plate and connected with the pair of end plates to form an inner cavity of the seat body;
and one end plate is provided with an insertion hole matched with the air inlet pipe.
5. The shield gas shield of claim 4 wherein the tops of the pair of end plates and the tops of the pair of side plates are in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691908.6U CN210677465U (en) | 2019-10-11 | 2019-10-11 | Protective cover for plasma welding protective gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691908.6U CN210677465U (en) | 2019-10-11 | 2019-10-11 | Protective cover for plasma welding protective gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210677465U true CN210677465U (en) | 2020-06-05 |
Family
ID=70901474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921691908.6U Active CN210677465U (en) | 2019-10-11 | 2019-10-11 | Protective cover for plasma welding protective gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210677465U (en) |
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2019
- 2019-10-11 CN CN201921691908.6U patent/CN210677465U/en active Active
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